We just bought a home with a Jacuzzi tub and shower combo. The unit is about 11 years old. Only 1 of the jets has a lot of pressure, the others are just so-so. I'm wondering if the jets just need cleaning or do we need to have someone come look at it. There is this thing that says "cleanout" on it, but I'm afraid to take it off. Will it help the pressure to clean out the "cleanout?" Thanks!